Cricket Wireless / billing/customer service

I was told by the store that my ACH would come off my card on January 3, 2018. Now they want to shut my service off and charge me 90.00 to keep my service until the 4th of Jan. I am on disability and won't have money and no way to get it until the 3rd of Jan. No one at the store or at customer service is willing to help with the problems the store has caused by not doing their jobs. I have also filed a complaint with the FCC.